Posts Categorized: Technical Blog
The title of the Launchpad page already reflects the change. What remains to be done is: a) change the name of the Perl script and documentation; and b) change the Launchpad URL. It is likely that I will change the name of the script when I release version 1.x (see below). I’m not sure of all the implications in Bazaar regarding the URL change, so that task will have to wait for now. Now a little more info on the status of the project.
Welcome to volume 3 of Blogrotate. This is a short one this week, which is mostly dominated by the release of Windows 7. I have not had a chance to use it as yet but intend to give it a once over as soon as I get a chance. So, without further ado, on to the roundup.
This week the Log Buffer is a little more challenging for two reasons: a) Oracle Open World 2009 and b) the controversy around Monty Widenius’ opposition to Oracle owning MySQL due to the Sun acquisition, so let’s go straight to the articles.
One of the customers (actually a prospect) here in Australia asked me about minimal Oracle licensing on a quarter rack database machine. This prompted a thought of using Oracle Standard Edition instead of full blown Enterprise Edition with bunch of options. Before even going into possibility of using Oracle SE for the database machine, let’s see if we even want to.
Let’s go into the nitty-gritty… ODBM (Oracle Database Machine) v2 is twice as fast as version 1 when it comes to data warehousing. Compare to version 1, ODBM v2 runs OLTP traffic — “something that Netezza and Teradata can’t do at all… but we can do both [i.e. data warehousing] and we do both very well” said Ellison. So what’s inside?
I love puzzles. So when I heard about the NoCoug SQL Challenge I felt tempted to give it a go. The Northern California Oracle Users Group (NoCoug) has challenged us to find a good way to calculate the probability of getting different sums for x throws of a n-sided die using only SQL. The probabilities for the faces of a single die are stored in a table and that’s all you need to start playing with the problem. The SQL Challenge rules can be found on the NoCoug website, along with some other relevant information.
There has been a lot of buzz about the Oracle Exadata Storage Server these past few days. Did you know you can actually estimate the impact of it on some of your queries with SQL Performance Analyzer (SQLPA)? Here is the story.
Last Friday (September 26), Paul Vallée and I were lucky enough to interview Kevin Closson about the Oracle Exadata Storage Server. A tidied-up stream of the audio is here. The audio quality is a little spotty here and there, so you might like to follow the transcription in this post.
Welcome the the 85th edition of Log Buffer, the weekly review of database blogs. Here we go!
I chose to talk about a technique I used at a client’s site to report the topmost space-wasting objects in an Oracle database. I was looking for a way to detect these objects without having to run some expensive analyze statements or dbms_stats jobs. I found out that I can use the dbms_space package to do this. It worked very well for me and I’m sure lots of DBAs could use this technique too.